Cooperative Caching and Video Characteristics in D2D Edge Networks
IEEE Communications Letters, cilt.24, sa.11, ss.2647-2651, 2020 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 24 Sayı: 11
- Basım Tarihi: 2020
- Doi Numarası: 10.1109/lcomm.2020.3009279
- Dergi Adı: IEEE Communications Letters
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
- Sayfa Sayıları: ss.2647-2651
- Anahtar Kelimeler: cooperative caching, device-to-device (D2D) communication, Multimedia communication, wireless networks
- Boğaziçi Üniversitesi Adresli: Evet
Özet
Device-to-device (D2D) transmissions in wireless edge networks are promising for optimizing system-wide energy consumption and improving system service capacity. Cooperative content caching similarly serves efficiency goals for data-intensive applications in edge networks. In this work, we propose two cooperative cache replacement algorithms in D2D networks to support these techniques: i) distance-based ii) priority-class based. Video content dissemination in an edge network is our main use-case. In such content traffic, video characteristics have a significant impact on the system behavior. Therefore, we also investigate the effect of content scene change dynamics in our system. Distance based cooperation outperforms LRU , MIN - ACC and SXO in terms of goodput while priority-class based approach consumes less energy than MIN - ACC with almost the same consumption as LRU , especially under fast-changing scene regime. Besides, it is energy-wise slightly more rewarding than SXO for the fastest-changing scene case.